/Engine/Plugins/Runtime/XRBase/Source/XRBase/Public/HeadMountedDisplayBase.h
Helper to copy one render target into another for spectator screen display.
virtual void CopyTexture_RenderThread ( [FRHICommandListImmediate](API\Runtime\RHI\FRHICommandListImmediate) & RHICmdList, FRHITexture2D * SrcTexture, FIntRect SrcRect, FRHITexture2D * DstTexture, FIntRect DstRect, bool bClearBlack, bool bNoAlpha ) const